<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
import * as echarts from 'echarts'
require('./spider') // echarts theme
import { debounce } from '@/utils'

const animationDuration = 6000

export default {
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '300px'
    },
    optionTitleText: {
      type: String,
      default: ''
    },
    optionLegend:{
      type: Array,
      default: []
    },
    optionSeries:{
      type: Array,
      default: []
    },
    optionXAxisData:{
      type: Array,
      default: []
    },
  },
  data() {
    return {
      chart: null,
      opinion:{
        title: {
          text: this.optionTitleText,
          padding: 10,
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: { // 坐标轴指示器，坐标轴触发有效
            type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
          }
        },
        dataZoom:[
          {
            type:'slider',
            show:true
          }
        ],
        legend: {
          data: this.optionLegend
        },
        grid: {
          top: 30,
          left: '2%',
          right: '2%',
          bottom: '3%',
          containLabel: true
        },

        xAxis: [{
          type: 'category',
          boundaryGap: false,
          data: this.optionXAxisData,
          axisTick: {
            alignWithLabel: true
          }
        }],
        yAxis: [{
          type: 'value',
          axisTick: {
            show: false
          }
        }],
        series: this.optionSeries
      }
    }
  },
  watch:{
    optionSeries(newValue,oldValue){

      console.log("newValue",JSON.stringify(newValue))
      this.opinion.series=newValue
      this.chart.setOption(this.opinion);
    },
    optionXAxisData(newValue,oldValue){

      console.log("newValue",JSON.stringify(newValue))
      this.opinion.xAxis[0].data=newValue
      this.chart.setOption(this.opinion);
    },
    optionLegend(newValue,oldValue){

      console.log("newValue",JSON.stringify(newValue))
      this.opinion.legend.data=newValue
      this.chart.setOption(this.opinion);
    },
    optionTitleText(newValue,oldValue){

      console.log("newValue",JSON.stringify(newValue))
      this.opinion.title.text=newValue
      this.chart.setOption(this.opinion);
    },
  },
  mounted() {
    this.initChart()
    this.__resizeHandler = debounce(() => {
      if (this.chart) {
        this.chart.resize()
      }
    }, 100)
    window.addEventListener('resize', this.__resizeHandler)
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    window.removeEventListener('resize', this.__resizeHandler)
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, 'spider')
      this.chart.setOption(this.opinion)

    }
  }
}
</script>
